// Copyright  2004-2008 Backplane Ltd.
//
// This file is part of Ubiquity formsPlayer
//
// Ubiquity formsPlayer is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3 of the License, or (at your
// option) any later version.
//
// Ubiquity formsPlayer is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License
// along with Ubiquity formsPlayer If not, see <http://www.gnu.org/licenses/>.
//	
//
//   Purpose: declaration of CUIImplRepository.
//   $Id$


#pragma once
#include <XBLEngine.h>
#include <XBLResolver.h>

struct IXMLDOMNodeList;
struct IXMLDOMNode;
struct IXSLProcessor;
//<summary>
//	Loads appropriate IEngine objects on demand, and caches them 
//	so that they don't have to be loaded every time they are needed.
//</summary>
class CUIImplRepository
{
public:
	CUIImplRepository(const wchar_t * wsChromeDirectory,IXMLDOMNodeList * pNlExtraBindings,IXSLProcessor * pXSLProcessor,IDOMImplementation * pImpl);
	~CUIImplRepository(void);
	//<summary>
	//	retrieves an appropriate IEngine implementation of a UI control by examining
	//	the given xml node.
	//</summary>
	HRESULT GetUIImpl(IXMLDOMNode * pSelectionNode, IEngine ** ppRetVal);

	// <summary>Gets the collection of namespaces that the XBL bindings that will be returned by this repository use</summary>
	//<param name="ppRetval">on return, contains the list of namespaces</param>
	HRESULT GetXBLNamespaces(IXMLDOMNodeList ** ppRetval);
	HRESULT AddBindingsDocument(BSTR bsURL);
private:
	CComBSTR m_sChromeDirectory;
	
	CComPtr<IBindingResolver> m_pResolver;
};